The pathology and surgical treatment of tumors . represents the natural size of the the elements of a tooth-germ (Fig. 315). In the majority of cases thetumors are composed of two or more tooth-germs indiscriminatelyfused (Sutton). It is supposed that odon-tomes are more frequent in the lower thanin the upper jaw, but there is good groundfor the belief that many such tumors havebeen described as exostoses of the diagnosis of dental tumors is veryobscure, and in consequence of faultydiagnosis uselessly severe operations haveoften been performed for the removal oftumors of this kind.
The pathology and surgical treatment of tumors . represents the natural size of the the elements of a tooth-germ (Fig. 315). In the majority of cases thetumors are composed of two or more tooth-germs indiscriminatelyfused (Sutton). It is supposed that odon-tomes are more frequent in the lower thanin the upper jaw, but there is good groundfor the belief that many such tumors havebeen described as exostoses of the diagnosis of dental tumors is veryobscure, and in consequence of faultydiagnosis uselessly severe operations haveoften been performed for the removal oftumors of this kind. It is important toexamine solid and cystic tumors of thejaws, especially if they occupy the site of tooth-germs, with specialreference to their possible dental origin. A diagnosis once made, asuccessful operation can be performed with little mutilation. The bonesurrounding the tumor is removed by subperiosteal resection, when thetumor can be enucleated or removed with gouge and mallet. Thecavity is tamponed for a few days with iodoform Fig. 315.—Composite odontome froma young lady aged eighteen ; natural size(after Heath). XXIII. ANGIOMA. Definition.—A71 angioma is a tumor composed of blood-vessels pro-duced from a matrix of aitgioblasts. Angiomata were formerlydescribed as teleangiectasia, angiotelectasia, angioma pleni-forme, erectile tumors, and nsevi. Virchow included all vasculartumors under the head of angioma. Tumors composed of lymphaticvessels are called lymphangioma, to distinguish them from tumorscomposed of blood-vessels, and this is what is generally understoodby the unquahfied term angioma. The definition excludes fromthis class of tumors all swellings caused by dilatation of pre-existingblood-vessels, aneurysm, and varicose veins. The angiomatous tumor
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
